摘要
本文介绍了南航３米低速风洞中用于模拟过失速飞行的电控液压动态实验台、数据采集和处理等问题。该实验台可以较真实地模拟过失速飞行时迎角的变化规律，迎角可在０°～９０°内任意变化。数据处理时要注意到由于来流风速的滞后而产生的速度变化。
This paper introduces the dynamic test rig which is a controlled hydraulically-actuated system in the low speed wind tunnel at Naming Uniyersity of Aeronautics and Astronautics.The data acquisition is also discussed.The test rig can produce the rapid pitching motions inyolving angle of attack excursions as large as 0°to 90°deg and back.The excursions involyed sinusoidal or ramp variations in the angle of attack.The change of velocity should be noticed during the data treatment because of the velocity lag.
